syntax = "proto3";

package lists;

option go_package = "./proto;lists";

service Lists {
	rpc List(ListRequest) returns (ListResponse);
	rpc Create(CreateRequest) returns (CreateResponse);
	rpc Read(ReadRequest) returns (ReadResponse);
	rpc Delete(DeleteRequest) returns (DeleteResponse);
	rpc Update(UpdateRequest) returns (UpdateResponse);
	rpc Events(EventsRequest) returns (stream EventsResponse);
}

message List {
	// unique id for the list, generated if not specified
	string id = 1;
	// time at which the list was created
	string created = 2;
	// time at which the list was updated
	string updated = 3;
	// name of the list
	string name = 4;
	// items within the list
	repeated string items = 5;
}

// Create a new list
message CreateRequest {
	// list name
	string name = 1;
	// list items
	repeated string items = 2;
}

message CreateResponse {
	// The created list
	List list = 1;
}

// Read a list
message ReadRequest {
	// the list id
	string id = 1;
}

message ReadResponse {
	// The list
	List list = 1;
}

// Update a list
message UpdateRequest {
	List list = 1;
}

message UpdateResponse {
	List list = 1;
}

// Delete a list
message DeleteRequest {
	// specify the id of the list
	string id = 1;
}

message DeleteResponse {
	List list = 1;
}

// List all the lists
message ListRequest {}

message ListResponse {
	// the list of lists
	repeated List lists = 1;
}

// Subscribe to lists events
message EventsRequest {
	// optionally specify a list id
	string id = 1;
}

message EventsResponse {
	// the event which occured; create, delete, update
	string event = 1;
	// the list which the operation occured on
	List list = 2;
}